Window-ventilator



N. B. NIELSEN AND E. e. BRANT.

WINDOW VENTILATOR.

APPLICATION HLED'MAR. 29, 1920.

.1 ,.?,99,1 35. Patented Dec. 1921.

V 7 E1115 llfirant m" N NmulaxfLNlalsgn in accordance UNITED STATES PATENT OFFICE.

WIN DO W-VENTILATQR.

Specification of Letters Patent.

Patented Dec. 6, .1921.

Application filed March 29; 1920. Serial No. 369,758.-

T 0 all whom it may concern.

Be it known that we, NICOLAI B. NIELsnN and ELLIS G. BRANT, the former a subject of Sweden and the latter a citizen of the United States, and residents of Milwaukee, in the county of Milwaukee and State of lVisconsin, have invented certain new and useful Improvements in lVindow-Ventilators; and we do hereby declare that the following is a full, clear, and exact description thereof.

Our invention relates to new and useful improvements in ventilators, particularly of that type which is adapted to be applied to the lower portions of window frames.

The principal object of the invention is to provide a device of this character which can be quickly and easily associated with any form of sliding sash window, the latter being capable of being raised or lowered without the complete removal of the former: At the present time many sliding sash windows have handles which project from the sash to aid in raising and loweringthe window. Such handles are usually interfered with by most ventilators at present in use so that the window cannot be openedmore than a predetermined limited extent. ,Vith our ventilator, however, the addition of handles to the window sash makes no difference in the proper raising and lowering of the latter or the effective use of the ventilator.

An additional object of the invention is to provide a ventilator for sliding sash windows which will have means for regulating the inflow of air through the same.

A further object of the invention is to provide aventilator having a horizontal slidable cover carrying a readily adjustable ventilator plate.

A further object of the invention is to provide a simply constructed ventilator formed of a relatively few number of parts which.

can be quickly and easily assembled or disassembled.

lVith these objects in view the invention resides in the novel features of construction, combination and arrangement of parts which will be hereinafter more particularly described and claimed and shown in the drawing wherein V Figure 1 represents a horizontal sectional. view through a window frame and sash the former of which has a ventilator constructed with our invention secured thereto, said ventilator being shown plan VIGW,

Fig. 2 is a transverse sectional view on the plarne of the line 22 of Fig. 1.

i lg. end portion of the ventilator, parts being broken away and shown in section to more particularly illustrate the construction, and

Fig. at is a sectional perspective view of a slightly modified form of cover forming part of our invention.

' particularly to Figs. 1', 2. and 3, thereference character F denotes a Referring more of the end frames 1 has a guide groove 5 at its frontedge whlch receives the end edges ofthe front plate3. In its preferred embodiment this last mentioned. plate is in the form of a parent glass or similar material.

The. bottom plate 2 rests upon the sill S and extends from one end frame to the other. Its inner end is bent upwardly to provide a flange 6 which is located inwardly of the .front plate 3as clearly shown in Fig. 2. Owing to the fact that the ends of the front plate 3 are located in the guide grooves 5 and its lower longitudinal edge rests upon the bottom plate 2 outwardly of the flange 6, it is obvious that any rain which may heat into the ventilator beneath the sash cannot leak into the room.

The upper edges of the end frames 1 are bent inwardly as at 7 to provide flanges which cooperate with similar parallel flanges 8 of angle bars 9. Guide grooves are thus formed at each upper edge of the end frames and slidably receive the ends of the cover 4. The latter includes a sheet metal perforated plate 10 having its inner longitudinal edge portion bent laterally to provide a stop lip 11, which, when the cover is in position as shown in Figs. 1 and 2, is in engagement with the front plate 3.

The perforations in the plate 10 may be of any desired size or shape, but in the present instance are rectangular and are covered by a screen 12 of foraminous material which h u h a m h a to e u e dus P t e 3 is a front elevational View of one sheet oftranslucent or trans- V 15 andis used for shifting the same same longitudinally of the plate 10.

from the room in which the ventilator is located. This screen 12 is secured to the under side of the plate 10 by means of retaining strips 13 which also attach packing, strips 14 thereto adjacent the longitudinal edge of the cover. The packing strip 14 at the outer edge of the cover engages the window sash to form a tight joint therebetween. y

The openingsin the plate 10 may be partially or wholly closed by a damper plate 15, the same being hinged along one longitudinal edge to: the inner retaining strip 13 as indicated at 16. The outer longitudinal edge of the plate may thus be disposed varying distances from the any one of its positions by an arcuate retaining bar 17. This retaining bar 17 being concentric with the pintle of the hinge 16 and extended through a hole in the plate 10, the damper plate may "be frictionally held at a desired inclination.

In that form of the in Fig.4, thecover 4 out type of damper plate, otherwise, however, it is associated with the same parts and actuated in the same manner as the cover 4:. Specifically the cover 4 includes a sheet metal plate 10 having a stop lip 11, openings 10" covered by a foraminous screen 12 and a damper plate 15. provided with a plurality of openings 15" which may be moved into or out of registration with the openings 10 by shifting the invention disclosed knob 17' is connected with'the damper plate from open to closed position or vice versa in suitable guides 16 carried by the plate 10.

In the use of either form of our invention it is obvious that the window sash may be readily raised or lowered without interfer ence of the handles H thereof with the cover plate 10 and heldin spaced from the window,

has a slightly differ- This plate 15' is.

A downwardly, and means we have hereunto set our portion of the ventilator. In other words when it is necessary to move the handles H above or below the plane of the cover portion, the latter is slid inwardly away from thesash so as to permit the outer edge of the same to be spaced away from the sash. Otherwise the cover portion may be readily I shifted from one position to another even though it carries a damper plate. In addition to the illustrated changes, various other modifications of the invention may be made without departing from the principles thereof or. sacrificing any of the advantages.-

VVe'claimr. y

1. Aventilator including end frames, guide grooves on the upper edges of. the end frames, said end frames being adapted to be disposedatthe sides of the window, a front plate supported by the end frames and and an apertured coverslidable in said grooves over the upper edge of the front plate and toward and away from the window, and a damper carried by the cover, said cover and damper being simultaneously movable.

.2. A ventilator including a pair of end frames a front plate supported by the end frames, a foraminous cover plate, disposed over the front plate and "engaging the end frames, a damper plate disposed underneath the cover plate and having one edge hinged to the inner edge portion of the cover whereby said damper plate may swing for holding the damper plate .at different angles with respect to the cover plate.

In testimony that we claim the foregoing hands at Milwaukee,.in the county of Milwaukee and State of Nisconsin. V

' NICOLAI l3. NIELSEN.

ELLIS Gr. BRANT. 

